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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 14 |
| 4 | 43 |
| 5 | 124 |
| 6 | 352 |
| 7 | 1025 |
| 8 | 2977 |
| 9 | 8619 |
| 10 | 24982 |
| 11 | 72411 |
| 12 | 209844 |
| 13 | 608174 |
| 14 | 1762633 |
| 15 | 5108427 |
| 16 | 14805217 |
| 17 | 42908476 |
| 18 | 124357153 |
| 19 | 360411436 |
| 20 | 1044543248 |
| 21 | 3027291501 |
| 22 | 8773685473 |
| 23 | 25427864489 |
| 24 | 73694947188 |
| 25 | 213582435997 |
| 26 | 619003863520 |
[1,5,14,43,124,352,1025,2977,8619,24982,72411, 209844,608174,1762633,5108427,14805217,42908476, 124357153,360411436,1044543248,3027291501, 8773685473,25427864489,73694947188,213582435997, 619003863520] |